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Adolphson Observatory
 
Observatory of Monmouth College in Monmouth.
Aero Observatory
 
A private observatory.
Albion
 
Alma
 
A town in Marion county.
Apple River
 
Astro-Physics
 
Observing site of telescope maker Astro-Physics Inc.
Barrington Hills
 
A town in Cook county. Site of International Year of Astronomy events.
Big Cigar Astronomy
 
Club near South Beloit
Birmingham Astronomical Observatory
 
A private observatory in Thompsonville. MPC designation H53.
Blackhawk Observatory
 
A private observatory.
Bloomington
 
A town in McLean county.
Bojarzin Observatory
 
Near Springfield.
Bradley
 
Home of the Kankakee Area StarGazers.
Braidwood Dark Sky Site
 
Near Gardner.
Caledonia
 
Carbondale
 
Home to some members of the Astronomical Association of Southern Illinois.
Carlyle Lake
 
A site on the south-east shore of Carlyle Lake. Near the town of Carlyle. Used by members of the St. Louis Astronomical Society and the River Bend Astronomy Club.
Chamberlain Observatory
 
A private observatory in Brighton.
Champaign/Urbana Astronomical Society Observatory
 
An observatory of the CUAS.
Charleston
 
Chatham
 
Chicago
 
Home of the Chicago Astronomical Society.
Claustonberry Observatory
 
A private observatory near Marengo.
Cricket Hill
 
Part of Lincoln Park. At Montrose Harbor.
Crystal Lake
 
Danville
 
A town in Vermilion county.
De Kalb
 
Home of the Davis Hall Observatory at Northern Illinois University.
Dearborn Observatory
 
Observatory of Northwestern University.
Decatur Area Astronomy Club
 
An observing site of the Decatur Area Astronomy Club at Friends Creek County Park. 20 miles NE of Decatur.
Decatur(IL)
 
Home of Requarth Observatory of Millikin University. Requarth Observatory is host of public observing nights.
Dolan Lake
 
Also known as the Hamilton County State Fish and Wildlife Area. Used as an observing site by the Obsessed of the EAS (Evansville Indiana Astronomical Society).
Doug Firebaugh Observatory
 
A public observatory in Freeport, Illinois, partly funded by the Planetary Studies Foundation.
Edwardsville Observatory
 
Near Edwardsville.
Effingham
 
A town in Effingham county.
Fieldon Hill Observatory
 
A private observatory near Feldon.
Galena
 
Garden of he Gods Recreation Area
 
A recreation area In Shawnee National Forest.
Gardner Camp
 
A not-for-profit camp with youth astronomy programs.
Glencoe
 
Grayville
 
Green River State Wildlife Area
 
Link.
Harrisburg
 
Harvey Observatory
 
A private observatory.
Hawkeye Observatory
 
A private observatory.
Heavens Gate Farm Observatory
 
A private observatory near Beverly. Also home of the Two Rivers Spring Star Party.
Hennepin Canal Parkway State Park
 
State park used by some members of the Naperville Astronomical Association.
Hickory Knolls Discovery Center
 
An environmental education center located in James O. Breen Community Park in St Charles. Also site of star parties held by OneDarkSky.com.
J. Weiskopf Observatory
 
Observatory with free public observing in Byron Forest Preserve District.
Kirkland
 
Knox College Observatory
 
Observatory at Knox College.
Lake Katherine Nature Center
 
Nature center in Palos Heights. Site of public observing sessions held by the Chicago Astronomical Society.
Lake Thunderbird
 
A lake near Putnam.
Lake Zurich
 
Lanphier Observatory
 
An observatory of the Sangamon Astronomical Society. Near Pleasant Plains.
Lily Lake Observatory
 
A private observatory near the town of Lilly Lake.
Lincolnshire
 
Also covers Deerfield which is home of the Skokie Valley Astronomers .
Lockport
 
A town in Will county.
Lombard
 
Forecast also covers Glendale Hieghts, Elmhurst, Villa Park, Addison, and Glen Ellyn.
Lone Wolf Observatory
 
A private observatory near Varna.
Macomb
 
Mantese's Farm
 
A private farm.
Marengo
 
Marion
 
Massbach Ridge
 
Megamark Observatory
 
A private observatory.
Middle Fork River Forest Preserve
 
Forest reserve and International Dark Sky Park near Penfield. Used by the Champaign Urbana Astronomical Society.
Moraine Valley Community College Observatory
 
observatory of Moraine Valley Community College.
Morton Grove
 
Forcast also covers Glenview, Wilmette, Evanston, Skokie, Park Ridge, Niles, and Des Plaines.
Mount Jennings Observatory
 
A private observatory somewhere around Manteno.
Mount Vernon
 
A town in Jefferson.
NAA Caton
 
A site of the Naperville Astronomical Association. A few miles from Newark, but 25 miles southwest of Naperville.
NAA Minooka
 
An observing site of the Naperville Astronomical Association.
NAA Observatory
 
An observatory of the Naperville Astronomical Association. Near Naperville.
NAA Ransom
 
An observing site of the Naperville Astronomical Association. Near Ransom.
Nick Drew Observatory
 
A private observatory near Hamel.
Northwest Suburban Astronomers
 
The NSA is active in the area of Palatine/Hoffman Estates.
OneDarkSky.com Observation Site #1
 
A clearing off of Cobblers Crossing, in Elgin. Site of public star parties held by OneDarkSky.com.
Our Prairie Sky
 
In Park Forest.
PACMO
 
An observing site of the Popular Astronomy Club.
PICO
 
A private observatory near Pana.
Peck Farm Park
 
Public viewing site for the Fox Valley Astronomical Society. In Geneva.
Peoria
 
Home of the Peoria Astronomical Society and the NorthMoor Observatory.
Peotone
 
Prairie Skies Star Party
 
Star party held at Camp Shaw-Waw-Nas-See.
Prairie State College
 
College in Chicago Heights.
Principia College Astronomical Observatory
 
Observatory of Principia College. In Elsah.
Rockford
 
Home of the Rockford Amateur Astronomers.
SWAOG Dark Site
 
A site of the South West Astronomy Observers Group in Yorkville.
SWAOG Light Site
 
A public observing site of the South West Astronomy Observers Group. In Wheaton.
Serena
 
A town in La Salle county.
Shiloh Station Road
 
Site "M"
 
A site of the Sangamon Astronomical Society.Near Ashland.
Smith Observing Site
 
Near Round Lake Beach and about 15 miles west of Waukegan.
Stardust Observatory
 
A private observatory.
Starved Rock State Park
 
State park. Used by some members of the Astronomical Society at the University of Illinois. Also home of Astrofest, a star party held by the Chicago Astronomical Society.
Stelle
 
A community in Rogers Township, IL
Sterling
 
Streator
 
Sugar Grove Observatory
 
An observatory of the Twin City Amateur Astronomers. In the Sugar Grove Nature Center.
Sullivan Observatory
 
A private observatory in Sullivan.
Sunny Knoll Observatory
 
A private observatory in Port Byron.
TASS H (Droege) Observatory
 
An observatory of the Amateur Sky Survey project. Near Batavia.
Taylor Dark Sky Site
 
Near Yale.
The Decker-Grebner-Van Zandt Observatory
 
Observatory maintained by the Peoria Astronomical Society. In Jubliee College State Park.
The Little Red School House
 
A site used by the Chicago Astronomical Society. In Willow Springs.
The Lone Wolf Observatory
 
A private observatory near Oak Lawn
The Stellar Shed
 
A private observatory near Aledo.
Tinley Park
 
A town in Cook county.
U-46 Planetarium
 
Elgin School District Planetarium in Elgin.
Velveeta Valley Observatory
 
Aka VVO, a private observatory in Pecatonica.
Viking Observatory
 
A private observatory Near Galesburg.
Walnut Point State Park
 
State park. Used by some members of the Astronomical Society at the University of Illinois and the Champaign Urbana Astronomical Society
Washington County State Recreational Area
 
Recreation area.
Weinberg-King State Park
 
State park near Augusta.
West Union
 
White Eagle Observatory
 
A private observatory near Naperville.
Winchester
 
Wolf Creek State Park
 
State park and site of public star parties held by the Sandusky Valley Amateur Astronomy Club (SVAAC).
Woodstock
 

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